my 46 1/2 ton has the Muncie 3 speed stamping - EO92051. That is correct, the serial number stamping indicates a 47 transmission. It is really a truck 3 spd with a roller bearing cluster gear. My casting numbers are similar on the drivers side of the case starting on the top
591195
GM 6
47
G288
The truck was built in December 46 so I guess they ran out of 46 transmissions. I am pretty certain this is the original.
But.. I really need some help with this one. When I disassembled there were not rollers left between the input and output shafts. So I need both. Does anyone know if the internals from a later model 3 speed like the 48 to 53 could be transplanted into the 47 case?
